EPJ Web of Conferences (Apr 2010)
Recent results from the G0 experiment
- Roos P.,
- Roche J.,
- Ramsay W.D.,
- Quinn B.,
- Poelker M.,
- Pitt M.L.,
- Pillot P.,
- Phillips S.K.,
- Pate S.F.,
- Papavassiliou V.,
- Page S.A.,
- van Oers W.T.H.,
- Muether M.,
- Mkrtchyan H.,
- Mihovilovic M.,
- Micherdzinska A.,
- McKeown R.D.,
- Martin J.W.,
- Mammei J.,
- Lung A.,
- Liu J.,
- Lee L.,
- Kox S.,
- Korsch W.,
- King P.M.,
- Jones M.,
- Horn T.,
- Hansknecht J.,
- Guillard G.,
- Grames J.,
- Gericke M.T.W.,
- Gaskell D.,
- Furget C.,
- Franklin G.,
- Flores G.,
- Davis C.A.,
- Ellis C.,
- Coppens A.,
- Chao Y.-C.,
- Capuano C.L.,
- Breuer H.,
- Bosted P.,
- Birchall J.,
- Benmokhtar F.,
- Bimbot L.,
- Benesch J.,
- Beise E.J.,
- Beck D.H.,
- Bailey S.L.,
- Arvieux J.,
- Armstrong D.S.,
- Androić D.,
- Real J.S.,
- Schaub J.,
- Seva T.,
- Simicevic N.,
- Smith G.R.,
- Spayde D.T.,
- Stutzman M.,
- Suleiman R.,
- Tadevosyan V.,
- Versteegen M.,
- Voutier E.,
- Vulcan W.,
- Wells S.P.,
- Williamson S.E.,
- Wood S.A.
Affiliations
- Roos P.
- Roche J.
- Ramsay W.D.
- Quinn B.
- Poelker M.
- Pitt M.L.
- Pillot P.
- Phillips S.K.
- Pate S.F.
- Papavassiliou V.
- Page S.A.
- van Oers W.T.H.
- Muether M.
- Mkrtchyan H.
- Mihovilovic M.
- Micherdzinska A.
- McKeown R.D.
- Martin J.W.
- Mammei J.
- Lung A.
- Liu J.
- Lee L.
- Kox S.
- Korsch W.
- King P.M.
- Jones M.
- Horn T.
- Hansknecht J.
- Guillard G.
- Grames J.
- Gericke M.T.W.
- Gaskell D.
- Furget C.
- Franklin G.
- Flores G.
- Davis C.A.
- Ellis C.
- Coppens A.
- Chao Y.-C.
- Capuano C.L.
- Breuer H.
- Bosted P.
- Birchall J.
- Benmokhtar F.
- Bimbot L.
- Benesch J.
- Beise E.J.
- Beck D.H.
- Bailey S.L.
- Arvieux J.
- Armstrong D.S.
- Androić D.
- Real J.S.
- Schaub J.
- Seva T.
- Simicevic N.
- Smith G.R.
- Spayde D.T.
- Stutzman M.
- Suleiman R.
- Tadevosyan V.
- Versteegen M.
- Voutier E.
- Vulcan W.
- Wells S.P.
- Williamson S.E.
- Wood S.A.
- DOI
- https://doi.org/10.1051/epjconf/20100303004
- Journal volume & issue
-
Vol. 3
p. 03004
Abstract
We have measured parity violating asymmetries in elastic electron-proton and quasi-elastic electrondeuteron scattering at backward electron angle. These measurements have been done at two momentum transfers : Q2 = 0.22 and 0.63 (GeV/c)2 . Together with our previous forward angle measurement [1], we can extract strange quark contributions to the electromagnetic form factors of the nucleon, as well as nucleon axial form factor coming from the neutral weak interaction. The results indicate a strange quark magnetic contribution close to zero at these Q2 , and a possible non zero strange quark electric contribution for the high Q2 . The first Q2 behavior measurement of the nucleon axial form factor in elastic electron scattering shows a good agreement with radiative corrections calculated at Q2 = 0 and with a dipole form using the axial mass determined in neutrino scattering.
